Forging-machine.



No. 840,578. PATENTED JAMB, 190.7.

A M. M. MORRISON.

PORGING MACHINE.

APPLICATION FILED 00T. 22, 1902.

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vlllllllllllum IIIIIIII M. M. Y'MORRIS-0N. FORGING. MACHINE.

APPLOATION FILED 00T. 22, 1902.

PATBNTED JAN. 8, 190'7.

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forms for different purposes.

`and -Statelof Michigan, have invented certain tion, reference being had to the accompany. ing drawings, fo

l cilitate forging or shaping rock-drills," stone- 'machina showing the dies closed or brought lchine having a reciprocating piston or plunger for operating the movable dies.

MAoKm'rosH MAonAr MoRRisoN, :or CALUMET, .Miou-1cm.

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To all whom it may conserva-' j- 4' Be'l `it known thatfI, MAol'rIN'rosH MAOKAY MoRRIsoN,a citizen of the United States, residing at lCalumet in the county 'f Houghton new anduseful Im rovements in Forging-Machines, of which t e followingis a specificaa part thereof. The main objecto this invention is to fai.

jack `pinion'shaf ts,or other articles having projections or depressions 4on two or more It consists in certain novel features of construction and in thearrangement and combinations 'of arts hereinafter particularly described an` claimed. In" he accompanying drawings like letters designate 'the same parts inthe several iig Figure 1` is a rear elevation, certainfpart's y being broken away, of a forging-machine embodying my invention,l the dies being o'pen or separated. Fig. 2 is a similar view of the together. Fig. 3 is a section on the line 3 3, Fig. 1.` Fig.4 is a section4 and elevation on the line 4 4, Fig. 1; and Fig. 5 is a view simi-l lar to Fig. 1 of a modified form of the machine, showing the dies closed. f

For4 the purpose lof illustration a machine designed particularly for forming the iuted portion and cutting edges of rock-drills is shown; but the invention is e ually applicable by such modifications as Wil be apparent to those skilled in the art tomachines foi` shaping various tools and articles .of diHerent The machine is intended to be used in a drop-hammer, steam-hammer, or other mae Referring to theydrawings, a and b are the main dies, one of which movable toward. and from the other.` The movable die a may' be attached 1.o the hammer-head,plunger, or piston, or may be detached and arranged to receive the blow or thrust of the hammer head, plunger, orjpiston of a drop or steam hammer or other machine. The stationary or anvil die b is mounted on a fixed 'support in the proper relation to the movable die and the Ihammer-head, piston, or plunger by which itis actuated. l

` Specification of-Letters 2atent. l' Annunciataombeizamoz. sariurmizazov.

' desiredto give to the forging.

yratntedsan. s, ieo'z--j main dies c and b, preferably on the ixed die,

movement Aof the die a.l Iny the present case the working faces of the several dies are alike, but their form is determined b the form it is cfc are auxiliarydies arranged between the thiscaseboth f the main dies aand b, are formed on opposite H sides of theirworking faces with inclined guiding-facesd d, which .converge from the',

ends of the die-blocks toward the working faces, and the auxilia dies c` c areformed i' with corresponding inc ined faces which are'v presented' to the inclined guiding-faces on the` A. 1`

other dies, the main-dieguiding-faces being longer than the corres onding faces of the auxiliary dies so that it, e opposing meetingfaces of the main dies mayl constitute ystopfaces to limitthe approac of the working facesv of said dies; but in certain cases-as, for example, in amachine for makingtr-form drills or drills having three vanos or blades-' the inclined ding-faces on the die a and the opposing inc c may be dispensed with, the die a being made ed faces on the auxiliary. dies with .a plain face opposed to corresponding vfaces on the auxiliary dies as shown in Fig. 5.

l The dies c c are formed at their ends on one or both sides, opposite their working faces,

fwith lateral projections or anges e, which overhang opposite sides of one or both of the' 'main dies, and thus prevent longitudinal displacement of the auxiliary dies and permit the faces of main dies to strike one another,

insuring uniformity of thickness of the forgings. These laterally-movable auxiliary dies c c are preferably assembled with and carried yby the' fixed diey b. They are formed ,at the ends back of their centers with studs f, with which the yends'of retracting-s rings g are connected. These springs may e con-.l veniently made of U shape from round wire and formed,'as shown, with circular coils to render them more iexible or elastic. They are retained in' lace byguards 4or keepers h, bolted over-t em to the sides of d1e b. The dies c are limited in their outward move` ment and are held when they are released by the withdrawal of the main die a, in roper workingrelation to said die byrecesse stops IOO i, which are bolted, with the guards or keep- IIO guiding-faces d of and simultaneously with the approach of the at their'rear ends with transverse angular projections or cutters j.

The machine herein shown and described operates as follows: A heated rod or blank being inserted inythe opening between the dies when they are separated, as shownin Fig. 1, the ldie a is forced by the stroke of` a hammer or thrust of a piston or plunger toward the die Fl). As it approaches the die b its inclined guiding-faces dengage the op-l posingfaces of the dies c and cause them te approach each other on the inclined thefixed 'die b equally die a toward the die b. As the dies are self- I centering and approach each other simultaneously, they operate equallyon the several sides of the blank, producing a symmetrical forging. 'This may be accomplished by a single stroke or thrust of the hammer-head, pisv ton, or plunger if suflicient force is applied .stops fi, leaving t thereto, or, if necessary or desired, the blows or thrusts may be repeated. The thickness of the forging between opposing faces of the dies is determined b the meeting faces 7c of the main dies, and the diameter or width of the for ing is determined by the size of the blank' om which it is made. When the hammer-head, piston, or plunger is withdrawn and the movable die a released, the springs g immediately retract the laterallymovable auxiliar dies c against the recessed lie forging free to be shifted in or removed from the machine as desired and preventing injury tol the dies by continued contact with and absorption of heat 4from the forging. The life of the dies is thus materially extended.

For some kinds of forgin such, for example, as stone-jack pinion-sa-fts-the angular prgections or cutters j are dispensed with.

arious changes in details of construction and arrangement of parts' may be made Withat one end a flange bearlng against the side of the main die, and means tending to retract' the auxiliary die, substantially as described. 2. In. a forging-machine the combination of main dies, one ofwhch is movable toward and from the other and one of which has a formingaface and guiding-faces inclined to the line of movement of the movable main the corresponding faces of the auxiliary dies, e

and the main dies' having opposing stopfaces which determine the approach of the working faces when the dies are brought together, substantially as described.

3. In a forging-machine the combination of main fixed and movable dies having forming-faces and inclined guiding-faces, laterally-movable auxiliary dies having inclined faces adapted to Abear against the opposing guiding-faces of the main dies and to simultaneously forc'e the auxiliary dies toward each other asthc main dies are brought together, substantially as described.

4. In a forging-machine the combination of two main dies one of lwhich is movable t0- Ward and from the other, having formino*- fa'ces and inclined guiding-faces which d1- verge in each die toward the op sing die, and laterally-movable auxiliary ies having inclined faces which corres ond with and are adapted to bearvagainst tllie opposing guiding-faces of the main dies and to simultaneously force the auxiliary dies toward each other as the main dies are brought together, substantially as described.

5. in a forging-machine the combination of opposing main dies, one of which is movable toward and from the other and one of which has an inclined guiding-face, an intermediate laterally-movable auxiliary die having an inclined face opposed to the guidingface on one of the main dies and guidingfianges overhanging said main die at the ends and holding said auxiliary die against longitudinal displacement, and stops ou the sides of said main die for limiting` the outward movement of the auxiliary d1e, and ermitting the faces of the main dies to stri e each other without injury to the auxiliary die, substantially as described.

6.' in a forging-machine the combination of main dies one of which is movable toward and from the other, and one of which has inclined guidin -faces, intermediate laterallymovable auxi iary dies having inclined faces presentedto the guiding-faces on one of the main dies, stopson the sides of said main die for limiting the outward movement of the auxiliary dies, and means tending to separate the auxiliary dies and rmitting the faces of the main dies to strilra each other, substantially as described.

I p 7. In a forging-machine the cbmbination of main dies one of which is movable toward and from the other and one of which has an inclined guiding-face, and an intermediate laterally-movable auxiliary die having an inclinedface presented to the guiding-face on the IOC llO

main die, said dies havi ng transverse cuttingof projections at one end of the Working faces of the dies, substantially as described.

8. In a forging-machine the combination of main dies, one of which is movable toward and from the other and one of Which has inclined guiding-faces, intermediate laterally- Vmovable auxiliary dieshaving inclined faces presented to the inclined guiding-faces on the main die, 'retracting-springs connecting the auxiliary dies at their ends, and guards or kee ers attached to one of the main dies over sai springs and retaining them in place, substant1ally as described. y

9. In a -forging-machine the combination of main dies'one of Which is movable toward and from `the other and one of Which has recessed stops and guiding-faces diverging torward said stops from the longitudinal airis of said dies, laterally-movable auxiliary dies having, inclined faces presented to the inclined guiding-faces on the main die, and a retracting-spring tending lto 'Withdraw said auxiliary dies against said stops and ermitting the faces of the main dies to stri ei each other, thereby limiting the forward motion of the movable main die and insuring uniformity of thickness in the forgings Without injury to the Working faces of the dies, substantially as described.

In Witness whereof I hereto afiix my signature in presence of tWo Witnesses.

MACKINTOSH MACKAY MORRISON. Witnesses: Y

J. H. LA'rnRoP, E. D. JOHNSON. 

